MFR-25FBF52-523K Equivalent & Substitute Parts

Part Overview

The MFR-25FBF52-523K is a 523 kOhms ±1% 0.25W through-hole resistor in axial metal film composition, manufactured by YAGEO under the MFR series. This component is actively produced and widely used in general-purpose analog and digital circuit applications requiring stable resistance values with standard tolerance specifications. Substitute parts are identified to provide alternatives for procurement flexibility, inventory management, or when the primary part becomes unavailable.

Substiute Parts

MFR-25FBF52-523K

YAGEOIn Stock: 3764MFR-25FBF52-523K Datasheet

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YR1B523KCC

TE Connectivity Passive ProductIn Stock: 719YR1B523KCC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MFR-25FBF52-523K is determined by the following critical parameters:

• Resistance Value: Must be exactly 523 kOhms
• Power Rating: Must be 0.25W (1/4W) or higher
• Package Type: Must be Axial configuration
• Composition: Metal Film
• Number of Terminations: Must be 2
• Operating Temperature Range: Must encompass or exceed -55°C ~ 155°C
• Compliance: RoHS and REACH compliance status

The identified substitute YR1B523KCC meets all critical substitution criteria. While it features improved tolerance (±0.1% versus ±1%) and lower temperature coefficient (±15ppm/°C versus ±100ppm/°C), these represent performance enhancements rather than deviations from the allowed parameter set. The substitute maintains identical resistance value, power rating, axial package configuration, and two-terminal design.

Parameter Comparison

Engineering Selection Recommendations

Both the MFR-25FBF52-523K and YR1B523KCC are active production components with current RoHS compliance certifications. Selection between these parts should be based on the following factors:

MFR-25FBF52-523K is appropriate for applications where standard tolerance (±1%) and the specified temperature coefficient (±100ppm/°C) meet circuit requirements and where YAGEO sourcing is preferred or established in supply chain protocols.

YR1B523KCC is appropriate for applications requiring tighter tolerance control (±0.1%) and improved temperature stability (±15ppm/°C), or where TE Connectivity supply chain relationships are established. The extended lower operating temperature limit (-65°C versus -55°C) provides additional margin for extreme environment applications. Physical dimensions are slightly reduced, which may be beneficial in space-constrained layouts.

Both components maintain identical electrical function, axial package configuration, and two-terminal design, ensuring direct functional interchangeability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can YR1B523KCC be used as a direct replacement for MFR-25FBF52-523K?

A: Yes. Both components share identical resistance value (523 kOhms), power rating (0.25W), package type (Axial), and terminal configuration (2 terminations). The substitute features improved tolerance and temperature coefficient, which represent performance enhancements. Physical dimensions are within acceptable tolerance for standard PCB axial component footprints.

Q: What are the key differences between these two parts?

A: The primary differences are tolerance specification (±1% versus ±0.1%), temperature coefficient (±100ppm/°C versus ±15ppm/°C), and operating temperature lower limit (-55°C versus -65°C). The substitute offers superior stability and precision characteristics.

Q: Are there any packaging differences?

A: The main part is supplied in Bulk packaging, while the substitute is supplied in Tape & Box (TB) format. Both use identical Axial package configuration. Physical dimensions are comparable (0.094" vs 0.091" diameter; 0.248" length for both).

Q: Do both parts meet RoHS compliance requirements?

A: Yes. MFR-25FBF52-523K is ROHS3 Compliant, and YR1B523KCC is RoHS Compliant. Both meet current environmental and regulatory standards.

Q: Which part should be selected for high-precision applications?

A: YR1B523KCC is the appropriate choice for applications requiring tighter tolerance control and improved temperature stability due to its ±0.1% tolerance and ±15ppm/°C temperature coefficient.